Comprehensive two-dimensional gas chromatography (GC × GC) using dual specific detection (NPD/μECD) has been evaluated for the analysis of multipesticide residues in vegetable samples.Pesticide standard mixtures represented various.compound classes with a broad range of physical and chemical properties, including OC pesticides, OP insecticides and N-containing fungicides.The GC×GC system comprised a HP6890 GC equipped with both NPD and μECD detectors.